class Mail
{
    public function sendMail($to, $subject, $text, $html)
    {
        $mail = new PHPMailer(true);

        try {
            //Server settings
            $mail->SMTPDebug = 3;
            $mail->isSMTP();
            $mail->Host = 'smtp.gmail.com';
            $mail->SMTPAuth = true;
            $mail->Username = 'wuwu5431@gmail.com';
            $mail->Password = 'Password';
            $mail->SMTPSecure = 'tls';
            $mail->Port = 587;

            //Recipients
            $mail->setFrom('wuwu5431@gmail.com', 'John Smith');
            $mail->addAddress($to, '');
            $mail->addReplyTo('wuwu5431@gmail.com', 'Information($mail->addReplyTo)');

            //Content
            $mail->isHTML(true);
            $mail->Subject = $subject;
            $mail->Body    = $text;
            $mail->AltBody = $html . ' $html . This is the body in plain text for non-HTML mail clients';

            $mail->send();

            echo 'Message has been sent';
        } catch (Exception $e) {
            echo 'Message could not be sent. Mailer Error: ', $mail->ErrorInfo;
        }

    }//end of method
}// end of class

public function sendActivationEmail($email)
{
    $url = 'url';
    $text = 'text';
    $html = 'html';
    $mail = new AppMail;
    $mail->sendMail($email, 'Account activation', $text, $html);
}

public function register()
{
    if ($_SERVER['REQUEST_METHOD'] == 'POST'){
        $_POST = filter_input_array(INPUT_POST, FILTER_SANITIZE_STRING);
        foreach($_POST as $key => $value){
            $data[$key] = htmlspecialchars(strip_tags(trim($value)));
        }
        $this->userModel = new AppModelsUserM;
        if ($this->userModel->Register($data)) {
            Flash::addMessage('Thank you for Registering with us');
            $this->userModel->sendActivationEmail($data['email']);
            $this->redirect('User/UserC/success');
        }
    }
}